Next: Inverse transform Up: No Title Previous: Analysis of a . As pointed out earlier, if the data are periodic, Fourier analysis is best and there is no need for wavelet transforms. ... First, we show the graph of with its Mexican-hat wavelet transform (Fig 12). Figure 12: g2-wavelet map of showing the gradual shift to shorter durations. ... Figure 13: g2-wavelet map of a strongly modulated oscillation. ... Figure 14: g2-wavelet map of an intermittent signal. ...